Seamless stainless steel pipes 12х18н10т

Stainless steel seamless pipes have found their wide distribution, competing with welded products.

general description

For the production of sutures, metal is used, which is rolled up on the machine, and then brewed along. The formed seam is cleaned, calibrated, and polished in the next step. As an obvious drawback of the welded technology is the difficulty of bending the sheet, which has an impressive thickness. Therefore, these products can not have a wall thickness that exceeds 4 millimeters. Stainless steel is a fairly strong metal that does not undergo corrosion. If in the production process the GOST is observed, seamless stainless pipes are of high quality, which makes it possible to use them in the chemical industry when it becomes necessary to transport aggressive substances. For the reason that it is not necessary to bend a flat sheet, stainless steel pipes can have a wall thickness that is within 32 millimeters.

Characteristics

Stainless steel seamless pipes are able to undergo significant pressure, which is within 100 atmospheres. Pipes do not lend themselves to aggressive chemicals. They are able to withstand sudden changes in temperature. The production is based on the manufacture of a ring-shaped workpiece, which is then calibrated and stretched until the desired dimensions can be achieved, namely the wall thickness, length, and the like.

Types of seamless stainless pipes

Stainless steel seamless pipes, depending on the temperature, which is maintained during the production process, can be hot-deformed, cold-deformed and heat-deformed. Each variety has a certain wall thickness, maximum length and a set of diameters.

One can single out the requirements that are observed with this or that technology. For example, pipes that are made by the hot-deforming method do not assume thermal treatment in the final stage. While cold-deformed versions are exposed to high temperatures, and then left to cool.

GOST 9940-81

Stainless steel seamless pipes made according to the above-mentioned GOST may have a diameter that varies from 57 to 325 millimeters. Whereas the thickness of the walls varies from 15 to 32 millimeters. Pipes of unimaginable length can have parameters from 1.5 to 10 meters. The measured length is within certain limits, the maximum deviation for which can be 15 cm in both directions. Steel used for the manufacture of seamless hot-deformed products is regulated by GOST 5632. Technologists especially monitor the sulfur content, the volume of which should not exceed 0.02%. Seamless stainless steel pipes 12х18н10т, GOST of which is indicated above, can have a diameter that is in the range from 5 to 273 millimeters. Products can have a wall thickness of 0.2 to 22 millimeters. In this case, the length is equivalent to a limit of 0.75 to 7 meters. If you decide to use the pipes described for carrying out these or other works, you must be prepared for the fact that their price will be higher in comparison with welded products that have the same parameters. This can be explained by the technology used in the production process, which involves more impressive spending. Nevertheless, the quality characteristics and properties are more outstanding.

Scope of use

Stainless steel seamless pipes 12x18n10t, GOST of which is strictly observed in production, are intended for transportation of all kinds of environments, including aggressive ones. These products are used in the chemical, medical, food industries, as well as in energy and construction. They are also widespread in the gas, as well as in the oil-producing and processing industries. If we are talking about a diameter of 15 millimeters or more, we can talk about pipelines that are equipped in particularly critical technological areas. Such pipes are used in the construction of steam heating systems, which are operated at significant temperatures. You can meet them in chemical laboratories. Quite often they are purchased for the needs of the textile and pulp industry. Stainless steel seamless pipes 12x18n10t, whose diameter is medium and is located within 114 millimeters and more, are used in the oil and gas industry, within chemical enterprises and to meet the needs of the energy industry.

Additional scope of use

In the course of production, stainless steel can be polished and grinded, then it forms the basis for the products used for arranging interior and exterior design of premises of all kinds. It should be noted that for the installation of domestic water pipes, the use of corrosion-resistant seamless pipes can rarely be called technically justified. Seamless stainless steel pipes are inexpedient to purchase privately for the reason that they have a sufficiently high cost, complexity of installation and processing. Therefore, experts recommend considering the need to use the described materials at home individually in each case.

Additional features of seamless pipes

Stainless steel seamless 12x18n10t pipes contain titanium, chromium and nickel as alloying additives. Most often such products are used for the construction of pipelines for cold and hot water supply. Among the qualitative characteristics can be identified properties that are in the absence of influence on the composition and overall quality of drinking water.

With the use of steel of the above brand, pipes are produced that are not only round, but also oval, and also rectangular and square. The most often unconventional cross-section is used when it is necessary to create all kinds of metal structures, which are further used for the formation of interior items and for interior decoration of premises. Stainless steel seamless pipe has high resistance to acidic media. This quality is maintained even when the product is exposed to high temperatures of up to 600 degrees. Found this material is widely used not only in the chemical and medical, but also in the food industry. Such pipes can be welded, forming a sealed and reliable seam. As practice shows, you can expect a long enough period of operation. All this is due to several reasons, among which technology and the material used in the process.

Conclusion

Stainless steel seamless pipe has unique characteristics for heat resistance and heat resistance. That is why the material is used in the manufacture of equipment, which involves exploitation at temperatures reaching a limit of 1100 degrees. This applies to pipelines, combustion chambers, and high-temperature boilers.